Baker&#39;s oven.



No. 768,719. PATENTED AUG. 30, 1904. G. s. BAKER.

BAKERS OVEN.

A'PPLIUATION FILED FEB. 15. 1904'.

N0 MODEL. I e SHEETS-SHEET 1.

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PATENTED AUG. 30, 1904.

G. S. BAKER.

BAKERS OVEN.

APPLICATION FILED FEB. 15, 1904.

6 SHEETS-SHEET 2.

NO MODEL.

PATENTED AUG. 30, 1904 G. S. BAKER. BAKBRS OVEN.

APPLIOATION FILED FEB. 15, 1904.

e-smms-sanm 3.

N0 MODEL.

I III llll II III II No. 768,719. PATENTED AUG.;30, 1904.

G. S. BAKER.

BAKERS OVEN.

APPLIOATION FILED FEB. 15, 1904.

N0 MODEL. 6 SHEETB-SHEET 6.

Illil IIHI PATENTED v AUG. 30, 1904.

G. S. BAKER. BAKERS OVEN.

APPLICATION FILED FEB, 15, 1904.

no MODEL. 6 SHEETS-SHEET e.

I l l NrTED STATES Patented August 30, 1904.

PATENT FFICE,

BAKERS OVEN.

SPECIFICATION forming part of Letters Patent No. 768,719, dated August 30, 1904. Application filed February 15, 1904. Serial Nol93,684. (N model.)

To all 7077/0172, it may concern.-

ed by Perkinss tubes; and the object of the invention is to provide means for enabling such tubes to be heated to a higher tempera ture when a higher temperature is required.

The annexed drawings illustrate the invention as applied to a double-decker draw-plate oven with rear firing, Figure 1 being a verti: cal section of such an improved oven; Fig. 2, a cross-section thereof on line 2 2, Fig. 1; Fig. 3, a cross-section on line 3 3' of Fig. 1; Figs. A, 5, and 6, horizontal sections on lines 4 4:, 5 5, and 6 6 of Fig. 1, respectively; and Fig. 7, a similar section on line 6 6, Fig. 1, showing a modified arrangement of upper fine.

A is the structure of the oven; B B, the upper and lower oven-chambers.

C C are draw-plates; D D oven-doors.

E E E are sets of Perkinss tubes; F F, combustion-chambers of the furnace.

E" is a wide vertical flue leading directly upward in the rear wall of the oven from the combustion-chambers F F to the flue G, With which it has controllable communication through the damper H. Into this flue E" the ent invention a branch flue J leads out at one or both sides from the lower part of flue E to a chamber' K, Fig. 4:, under the front part of the lower oven, and thence a flue L leads laterally to the side of the oven, where it ascends at L to the top of the oven, whence it is carried at L obliquely, Fig. 6, or in a serpentine course, Fig. 7, into the flueG, before mentioned, which leads to the shaft.

M is a damper in flue G.

The chamber K heats the tubes E and 'E immediately above it, and thus brings these tubes to a higher temperature.

I claim A bakers oven having in combination with oven-chambers, Perkinss tubes and furnace, a damper-controlled flue rising directly from said furnace to the shaft-flue for heating the ends of said tubes, a chamber beneathsaid tubes in the base of the oven near the end remote from the furnace. a branch flue from the furnace to said chamber, a rising flue from said chamber in the side of the oven and a return-flue from said rising flue to the shaftfiue for the purpose set forth.

In witness whereof I have signed this specification in the presence of two Witnesses.

GEORGE SAMUEL BAKER. Witnesses:

H. D. JAMEsoN, A. NUTTING. 

